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  • Keyword (text search): cpe:2.3:a:openldap:openldap:2.4.15:*:*:*:*:*:*:*
There are 20 matching records.
Displaying matches 1 through 20.
Vuln ID Summary CVSS Severity
CVE-2020-25692

A NULL pointer dereference was found in OpenLDAP server and was fixed in openldap 2.4.55, during a request for renaming RDNs. An unauthenticated attacker could remotely crash the slapd process by sending a specially crafted request, causing a Denial of Service.

Published: December 07, 2020; 8:15:12 PM -0500
V3.1: 7.5 HIGH
V2.0: 5.0 MEDIUM
CVE-2020-15719

libldap in certain third-party OpenLDAP packages has a certificate-validation flaw when the third-party package is asserting RFC6125 support. It considers CN even when there is a non-matching subjectAltName (SAN). This is fixed in, for example, openldap-2.4.46-10.el8 in Red Hat Enterprise Linux.

Published: July 14, 2020; 10:15:17 AM -0400
V3.1: 4.2 MEDIUM
V2.0: 4.0 MEDIUM
CVE-2020-12243

In filter.c in slapd in OpenLDAP before 2.4.50, LDAP search filters with nested boolean expressions can result in denial of service (daemon crash).

Published: April 28, 2020; 3:15:12 PM -0400
V3.1: 7.5 HIGH
V2.0: 5.0 MEDIUM
CVE-2019-13565

An issue was discovered in OpenLDAP 2.x before 2.4.48. When using SASL authentication and session encryption, and relying on the SASL security layers in slapd access controls, it is possible to obtain access that would otherwise be denied via a simple bind for any identity covered in those ACLs. After the first SASL bind is completed, the sasl_ssf value is retained for all new non-SASL connections. Depending on the ACL configuration, this can affect different types of operations (searches, modifications, etc.). In other words, a successful authorization step completed by one user affects the authorization requirement for a different user.

Published: July 26, 2019; 9:15:12 AM -0400
V3.1: 7.5 HIGH
V2.0: 5.0 MEDIUM
CVE-2019-13057

An issue was discovered in the server in OpenLDAP before 2.4.48. When the server administrator delegates rootDN (database admin) privileges for certain databases but wants to maintain isolation (e.g., for multi-tenant deployments), slapd does not properly stop a rootDN from requesting authorization as an identity from another database during a SASL bind or with a proxyAuthz (RFC 4370) control. (It is not a common configuration to deploy a system where the server administrator and a DB administrator enjoy different levels of trust.)

Published: July 26, 2019; 9:15:12 AM -0400
V3.0: 4.9 MEDIUM
V2.0: 3.5 LOW
CVE-2017-17740

contrib/slapd-modules/nops/nops.c in OpenLDAP through 2.4.45, when both the nops module and the memberof overlay are enabled, attempts to free a buffer that was allocated on the stack, which allows remote attackers to cause a denial of service (slapd crash) via a member MODDN operation.

Published: December 18, 2017; 1:29:00 AM -0500
V3.0: 7.5 HIGH
V2.0: 5.0 MEDIUM
CVE-2017-14159

slapd in OpenLDAP 2.4.45 and earlier creates a PID file after dropping privileges to a non-root account, which might allow local users to kill arbitrary processes by leveraging access to this non-root account for PID file modification before a root script executes a "kill `cat /pathname`" command, as demonstrated by openldap-initscript.

Published: September 05, 2017; 2:29:00 PM -0400
V3.0: 4.7 MEDIUM
V2.0: 1.9 LOW
CVE-2017-9287

servers/slapd/back-mdb/search.c in OpenLDAP through 2.4.44 is prone to a double free vulnerability. A user with access to search the directory can crash slapd by issuing a search including the Paged Results control with a page size of 0.

Published: May 29, 2017; 12:29:00 PM -0400
V3.0: 6.5 MEDIUM
V2.0: 4.0 MEDIUM
CVE-2015-3276

The nss_parse_ciphers function in libraries/libldap/tls_m.c in OpenLDAP does not properly parse OpenSSL-style multi-keyword mode cipher strings, which might cause a weaker than intended cipher to be used and allow remote attackers to have unspecified impact via unknown vectors.

Published: December 07, 2015; 3:59:03 PM -0500
V3.x:(not available)
V2.0: 5.0 MEDIUM
CVE-2015-6908

The ber_get_next function in libraries/liblber/io.c in OpenLDAP 2.4.42 and earlier allows remote attackers to cause a denial of service (reachable assertion and application crash) via crafted BER data, as demonstrated by an attack against slapd.

Published: September 11, 2015; 12:59:12 PM -0400
V3.x:(not available)
V2.0: 5.0 MEDIUM
CVE-2015-1545

The deref_parseCtrl function in servers/slapd/overlays/deref.c in OpenLDAP 2.4.13 through 2.4.40 allows remote attackers to cause a denial of service (NULL pointer dereference and crash) via an empty attribute list in a deref control in a search request.

Published: February 12, 2015; 11:59:06 AM -0500
V3.x:(not available)
V2.0: 5.0 MEDIUM
CVE-2013-4449

The rwm overlay in OpenLDAP 2.4.23, 2.4.36, and earlier does not properly count references, which allows remote attackers to cause a denial of service (slapd crash) by unbinding immediately after a search request, which triggers rwm_conn_destroy to free the session context while it is being used by rwm_op_search.

Published: February 05, 2014; 1:55:06 PM -0500
V3.x:(not available)
V2.0: 4.3 MEDIUM
CVE-2012-1164

slapd in OpenLDAP before 2.4.30 allows remote attackers to cause a denial of service (assertion failure and daemon exit) via an LDAP search query with attrsOnly set to true, which causes empty attributes to be returned.

Published: June 29, 2012; 3:55:03 PM -0400
V3.x:(not available)
V2.0: 2.6 LOW
CVE-2012-2668

libraries/libldap/tls_m.c in OpenLDAP, possibly 2.4.31 and earlier, when using the Mozilla NSS backend, always uses the default cipher suite even when TLSCipherSuite is set, which might cause OpenLDAP to use weaker ciphers than intended and make it easier for remote attackers to obtain sensitive information.

Published: June 16, 2012; 11:41:41 PM -0400
V3.x:(not available)
V2.0: 4.3 MEDIUM
CVE-2011-4079

Off-by-one error in the UTF8StringNormalize function in OpenLDAP 2.4.26 and earlier allows remote attackers to cause a denial of service (slapd crash) via a zero-length string that triggers a heap-based buffer overflow, as demonstrated using an empty postalAddressAttribute value in an LDIF entry.

Published: October 27, 2011; 4:55:01 PM -0400
V3.x:(not available)
V2.0: 4.0 MEDIUM
CVE-2011-1081

modrdn.c in slapd in OpenLDAP 2.4.x before 2.4.24 allows remote attackers to cause a denial of service (daemon crash) via a relative Distinguished Name (DN) modification request (aka MODRDN operation) that contains an empty value for the OldDN field.

Published: March 19, 2011; 10:00:04 PM -0400
V3.x:(not available)
V2.0: 5.0 MEDIUM
CVE-2011-1025

bind.cpp in back-ndb in OpenLDAP 2.4.x before 2.4.24 does not require authentication for the root Distinguished Name (DN), which allows remote attackers to bypass intended access restrictions via an arbitrary password.

Published: March 19, 2011; 10:00:03 PM -0400
V3.x:(not available)
V2.0: 6.8 MEDIUM
CVE-2011-1024

chain.c in back-ldap in OpenLDAP 2.4.x before 2.4.24, when a master-slave configuration with a chain overlay and ppolicy_forward_updates (aka authentication-failure forwarding) is used, allows remote authenticated users to bypass external-program authentication by sending an invalid password to a slave server.

Published: March 19, 2011; 10:00:03 PM -0400
V3.x:(not available)
V2.0: 4.6 MEDIUM
CVE-2009-3767

libraries/libldap/tls_o.c in OpenLDAP 2.2 and 2.4, and possibly other versions, when OpenSSL is used, does not properly handle a '\0' character in a domain name in the subject's Common Name (CN) field of an X.509 certificate, which allows man-in-the-middle attackers to spoof arbitrary SSL servers via a crafted certificate issued by a legitimate Certification Authority, a related issue to CVE-2009-2408.

Published: October 23, 2009; 3:30:00 PM -0400
V3.x:(not available)
V2.0: 4.3 MEDIUM
CVE-2005-2069

pam_ldap and nss_ldap, when used with OpenLDAP and connecting to a slave using TLS, does not use TLS for the subsequent connection if the client is referred to a master, which may cause a password to be sent in cleartext and allows remote attackers to sniff the password.

Published: June 30, 2005; 12:00:00 AM -0400
V3.x:(not available)
V2.0: 5.0 MEDIUM